The possible sighting was made at about 1:45 PM E.S.T. in Cherry Hill, NJ. At this time, it had been raining for most of the day without report of thunderstorms or other activity. While standing outside, all of the sudden the sky lit up for maybe two seconds as if there had been a burst of lightning, however instead of being followed by thunder, a machine-like noise was heard for maybe three seconds. There was no lightning bolts observed nor additional flashes or noise before or after the occurrence that was noticed.